MK30G1X/

Manufacturer: Bosch Rexroth

Material #: R901433235

Model : MK30G1X/

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth MK30G1X (R901433235) is a sophisticated throttle check valve designed for precise fluid control in hydraulic systems. This component is engineered to modulate the flow of hydraulic fluid in one direction while allowing free flow in the opposite direction, ensuring efficient operation and energy conservation within the system. The valve operates by utilizing a spring and hydraulic fluid to press a poppet against a seat, thereby blocking flow in the throttling direction. Flow is permitted through lateral bores which guide the fluid to a throttling point between the housing and an adjustable sleeve, allowing for fine-tuned resistance to flow. When fluid pressure is applied from the opposite direction, it acts upon the poppet's front face, lifting it from its seat and enabling unobstructed passage through the valve. This design feature not only facilitates free flow but also incorporates a self-cleaning mechanism by allowing a portion of the hydraulic fluid to pass through an annular gap, effectively clearing any potential debris. Constructed with corrosion protection, this valve is built for durability and long-term performance in challenging environments. The MK30G1X valve is suitable for pipeline installation and can withstand maximum operating pressures up to bar with maximum flow rates reaching l/min. Its size and Component series X designation indicate its compatibility with various industrial applications requiring reliable pressure and viscosity-dependent control. With its robust design and precise control capabilities, this throttle check valve represents Bosch Rexroth's commitment to high-quality engineering and performance in hydraulic system components.

$1,054.00 USD

More are expected on April 21, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as April 21, 2025 when ordered in

For pipeline installation Related to pressure and viscosity Throttling in one direction of flow, free flow in opposite direction Corrosion-protected design

The valves type MK are pressure- and viscosity-dependent throttle check valves.

If the valve is passed by the flow in throttling direction, the spring (6) and the hydraulic fluid push the poppet (5) on the seat and the connection is blocked. Via lateral bores (3), the hydraulic fluid flow is directed to the throttling point (4) between the housing (2) and the adjustable sleeve (1).

In the opposite direction, the pressure acts on the front face of the poppet (5), lifts it from the seat and releases the flow. The hydraulic fluid flow is released through the valve without throttling.

In this process, simultaneous passing of a part of the hydraulic fluid via the annular gap leads to the desired effect of self-cleaning.

01	02	03	04		05	06	07
MK		G	1X	/			*

01	Throttle check valve	MK
02	Size 6	6
	Size 8	8
	Size 10	10
	Size 15	15
	Size 20	20
	Size 25	25
	Size 30	30
03	For threaded connection	G
04	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)	1X
Corrosion resistance (outside)
05	None (valve housing primed)	no code
	Improved corrosion protection (240 h salt spray test according to EN ISO 9227)	J3
	Improved corrosion protection (720 h salt spray test according to EN ISO 9227)	J5
Seal material (observe compatibility of seals with hydraulic fluid used, see "Technical data")
06	NBR seals	no code
06	FKM seals	V
07	Further details in the plain text	*

Notice:

For valve types for use in potentially explosive areas, refer to data sheet 07011.

general

Size			6	8	10	15	20	25	30
Weight		kg	0.3	0.4	0.7	1.1	1.9	3.2	4.1
Installation position			any
Ambient temperature	NBR seals	°C	-30 … +80
Ambient temperature	FKM seals	°C	-20 … +80

hydraulic

Size			6	8	10	15	20	25	30
Maximum operating pressure		bar	315
Cracking pressure		bar	0.5
Maximum flow			See characteristic curves
Leakage flow 1)	Standard	l/min	0.8	1	2		3	4	5.5
Leakage flow 1)	Version "J3" and "J5"	l/min	1.6		2.5	3.2	3.5	7	7.7
Hydraulic fluid			see table "Hydraulic fluid"
Hydraulic fluid temperature range	NBR seals	°C	-30 … +80
Hydraulic fluid temperature range	FKM seals	°C	-20 … +80
Viscosity range		mm²/s	10 … 800
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 2)			Class 20/18/15
Load cycles		million	10				2

1)	If valve is completely closed
2)	The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Hydraulic fluid		Classification	Suitable sealing materials	Standards	Data sheet
Mineral oils		HL, HLP	NBR, FKM	DIN 51524	90220
Bio-degradable 1)	Insoluble in water	HETG	FKM	ISO 15380	90221
	Insoluble in water	HEES	FKM	ISO 15380
	Soluble in water	HEPG	FKM	ISO 15380
Flame-resistant	Water-free	HFDU (glycol base)	FKM	ISO 12922	90222
		HFDU (ester base) 1)	FKM
		HFDR	FKM
	Containing water 1)	HFC (Fuchs Hydrotherm 46M, Fuchs Renosafe 500, Petrofer Ultra Safe 620, Houghton Houghto Safe 620, Union Carbide HP5046)	NBR	ISO 12922	90223
Important information on hydraulic fluids: For more information and data on the use of other hydraulicfluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The ignition temperature of the hydraulic fluid used must be 50 K higher than the maximum surface temperature. Flame-resistant - containing water: Maximum pressure differential 210 bar, otherwise, increased cavitation erosion Life cycle as compared to operation with mineral oil HL, HLP 30 … 100%. Maximum hydraulic fluid temperature 60 °C Bio-degradable and flame-resistant – containing water: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system.